compiler-rt/test/BlocksRuntime/varargs-bad-assign.c

   1 //
   2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   3 // See https://llvm.org/LICENSE.txt for license information.
   4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   5
   6 //  -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil;  -*-
   7 // HACK ALERT: gcc and g++ give different errors, referencing the line number to ensure that it checks for the right error; MUST KEEP IN SYNC WITH THE TEST
   8 // CONFIG 27: error:
   9
  10 #import <stdio.h>
  11 #import <stdlib.h>
  12 #import <string.h>
  13 #import <stdarg.h>
  14
  15
  16 int main (int argc, const char * argv[]) {
  17     int (^sumn)(int n, ...);
  18     int six = 0;
  19
  20     sumn = ^(int a, int b, int n, ...){
  21         int result = 0;
  22         va_list numbers;
  23         int i;
  24
  25         va_start(numbers, n);
  26         for (i = 0 ; i < n ; i++) {
  27             result += va_arg(numbers, int);
  28         }
  29         va_end(numbers);
  30
  31         return result;
  32     };
  33
  34     six = sumn(3, 1, 2, 3);
  35
  36     if ( six != 6 ) {
  37         printf("%s: Expected 6 but got %d\n", argv[0], six);
  38         exit(1);
  39     }
  40
  41     printf("%s: success\n", argv[0]);
  42     return 0;
  43 }